CarlesLamhamediBeaulieuEtAl2009

Reference

Carles, S., Lamhamedi, M.S., Beaulieu, J., Stowe, D.C., Colas, F., Margolis, H.A. (2009) Genetic variation in seed size and germination patterns and their effect on white spruce seedling characteristics. Silvae Genetica, 58(4):152-161. (Scopus )

Abstract

We determined the degree to which families differ in seed and germination characteristics and examined the extent to which these characteristics influence the early growth of 75 open-pollinated white spruce families. Seedcharacteristics (1000-seed weight, length, width, area, volume) were measured for 400 seeds per family. Germination variables (germination capacity, peak value, germination value) were determined for each of the 75 families under controlled conditions and germination patterns were modelled using the Weibull function. Seedling characteristics (height, diameter, shoot and root dry weights) were measured at the end of the first and second growing seasons under standard nursery cultural practices. Statistically significant family variation (p< 0.0001) was found for all seed characteristics and germination variables measured. The between-family variance explained 23% to 98% of the total variance of morphological and physiological seed characteristics. Family differences at the seed stage explained up to 33% (root dry weight) and 12% (shoot dry weight) of the family differences observed at the one-year and two-year seedling stages, respectively. Since, in this study based on a comparison of family means, a maximum of only 12% of the family differences observed at the two-year seedling stage were explained by the effect of seed size, a selection for families with better juvenile characteristics could be envisaged without considering the maternal effect of seed size.

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@ARTICLE { CarlesLamhamediBeaulieuEtAl2009,
    AUTHOR = { Carles, S. and Lamhamedi, M.S. and Beaulieu, J. and Stowe, D.C. and Colas, F. and Margolis, H.A. },
    TITLE = { Genetic variation in seed size and germination patterns and their effect on white spruce seedling characteristics },
    JOURNAL = { Silvae Genetica },
    YEAR = { 2009 },
    VOLUME = { 58 },
    PAGES = { 152-161 },
    NUMBER = { 4 },
    ABSTRACT = { We determined the degree to which families differ in seed and germination characteristics and examined the extent to which these characteristics influence the early growth of 75 open-pollinated white spruce families. Seedcharacteristics (1000-seed weight, length, width, area, volume) were measured for 400 seeds per family. Germination variables (germination capacity, peak value, germination value) were determined for each of the 75 families under controlled conditions and germination patterns were modelled using the Weibull function. Seedling characteristics (height, diameter, shoot and root dry weights) were measured at the end of the first and second growing seasons under standard nursery cultural practices. Statistically significant family variation (p< 0.0001) was found for all seed characteristics and germination variables measured. The between-family variance explained 23% to 98% of the total variance of morphological and physiological seed characteristics. Family differences at the seed stage explained up to 33% (root dry weight) and 12% (shoot dry weight) of the family differences observed at the one-year and two-year seedling stages, respectively. Since, in this study based on a comparison of family means, a maximum of only 12% of the family differences observed at the two-year seedling stage were explained by the effect of seed size, a selection for families with better juvenile characteristics could be envisaged without considering the maternal effect of seed size. },
    COMMENT = { Export Date: 11 November 2009 Source: Scopus CODEN: SIGEA },
    ISSN = { 00375349 (ISSN) },
    KEYWORDS = { Genetic variation, Heritabilities, Maternal effect, Picea glauca, Repeatability, Weibull function },
    OWNER = { Luc },
    TIMESTAMP = { 2009.11.11 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-70350149871&partnerID=40 },
}

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